Steel equivalents / Austenitic stainless steel 316 (316 / 1.4401 / SUS316)

STS316L

KRApproximate match

KS · KS D 3698:2008

The 316/316L family is the reference chromium-nickel-molybdenum austenitic stainless grade: the molybdenum addition (2 to 3%) gives it markedly better resistance to pitting and crevice corrosion in the presence of chlorides than the 304 family. It's preferred for marine environments, salt-exposed food processing, pharmaceutical and chemical applications. The low-carbon 316L variant limits carbide precipitation during welding and is recommended for welded assemblies and environments requiring high resistance to intergranular corrosion.

Equivalents by yield strength proximity

Grade	Region	Standard	Re (MPa)	Rm (MPa)	Delta
STS316L	KR	KS D 3698:2008	175	≥480	reference
SUS316L	JP	JIS G4303:2012	175	≥480	0%
316L (UNS S31603)	US	ASTM A240 / A276	170	≥485	-3%
Neighboring grades — different strength
1.4401 (X5CrNiMo17-12-2)	EU	EN 10088-1:2014	200	500–700	+14%
316 (UNS S31600)	US	ASTM A240 / A276	205	≥515	+17%
SUS316	JP	JIS G4303:2012	205	≥515	+17%
STS316	KR	KS D 3698:2008	205	≥520	+17%
1.4404 (X2CrNiMo17-12-2)	EU	EN 10088-1:2014	220	520–670	+26%

Chemical composition (wt%)

Grade	C	Mn	Si	P	S	Cr	Ni	Mo	N
STS316L	≤0.03	≤2	≤1	≤0.045	≤0.03	16–18	12–15	2–3	—
SUS316L	≤0.03	≤2	≤1	≤0.045	≤0.03	16–18	12–15	2–3	—
316L (UNS S31603)	≤0.03	≤2	≤0.75	≤0.045	≤0.03	16–18	10–14	2–3	≤0.1
1.4401 (X5CrNiMo17-12-2)	≤0.07	≤2	≤1	≤0.045	≤0.03	16.5–18.5	10–13	2–2.5	≤0.1
316 (UNS S31600)	≤0.08	≤2	≤0.75	≤0.045	≤0.03	16–18	10–14	2–3	≤0.1
SUS316	≤0.08	≤2	≤1	≤0.045	≤0.03	16–18	10–14	2–3	—
STS316	≤0.08	≤2	≤1	≤0.045	≤0.03	16–18	10–14	2–3	—
1.4404 (X2CrNiMo17-12-2)	≤0.03	≤2	≤1	≤0.045	≤0.03	16.5–18.5	10–13	2–2.5	≤0.11

Note: Aligned with SUS316L (Ni 12-15%); the same minimum mechanical properties as STS304L among the Korean producers consulted (175/480/40).

Values compiled from public sources for guidance only — always verify against the official standard before use in design or fabrication.